mirror of
https://github.com/paparazzi/paparazzi.git
synced 2026-06-04 13:55:40 +08:00
Gautier Hattenberger
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/*
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* Copyright (C) 2011 Gautier Hattenberger
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*
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* This file is part of paparazzi.
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*
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* paparazzi is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* paparazzi is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with paparazzi; see the file COPYING. If not, write to
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* the Free Software Foundation, 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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/* driver for MCP3550/1/3
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*/
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#include "peripherals/mcp355x.h"
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#include "mcu_periph/spi.h"
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bool_t mcp355x_data_available;
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int32_t mcp355x_data;
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uint8_t mcp355x_spi_buf[4];
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void mcp355x_init(void) {
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mcp355x_data_available = FALSE;
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mcp355x_data = 0;
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SpiClrCPOL();
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SpiClrCPHA();
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}
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void mcp355x_read(void) {
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spi_buffer_length = 4;
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spi_buffer_input = mcp355x_spi_buf;
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//SpiSelectSlave0();
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SpiStart();
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}
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void mcp355x_event(void) {
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if (spi_message_received) {
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spi_message_received = FALSE;
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if ((mcp355x_spi_buf[0]>>4) == 0) {
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mcp355x_data = (int32_t)(
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((uint32_t)mcp355x_spi_buf[0]<<17) |
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((uint32_t)mcp355x_spi_buf[1]<<9) |
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((uint32_t)mcp355x_spi_buf[2]<<1) |
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(mcp355x_spi_buf[3]>>7));
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mcp355x_data_available = TRUE;
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}
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}
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}
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